Laser drilling of non-circular apertures
Forming an aperture in a metal wall, including a diffuser opening up and out from bottom, comprises: (i) machining the wall with a laser beam of pulse rate and power sufficient to vaporise the metal; (ii) firing the laser at an acute angle across the surface at increasing pulse rate so that each bea...
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Main Authors | , , |
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Format | Patent |
Language | English French German |
Published |
28.04.1999
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | Forming an aperture in a metal wall, including a diffuser opening up and out from bottom, comprises: (i) machining the wall with a laser beam of pulse rate and power sufficient to vaporise the metal; (ii) firing the laser at an acute angle across the surface at increasing pulse rate so that each beam pulse vaporises the metal at a laser spot and drills continuously the metal wall; and (iii) traversing the laser beam latitudinally and longitudinally at increasing speed so that successive spots overlap in decreasing amounts to etch the metal, forming a continuous trench below surface. |
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Bibliography: | Application Number: EP19970303194 |